Emperor sanjian (Temensis), also known as Emperor Fish, is native to South America, but the fish is similar in size to the Bass of China. They have regular white spots on the body, and because the body is divided into three evenly arranged black vertical lines, so they are called Emperor sanjian in China. In the wild environment, they live in the transparent water area, so special attention should be paid to the maintenance of water quality. As a kind of carnivorous fierce fish, they eat a lot, and like to eat small fish, so they grow particularly fast.